this audiobook is not an original version made 由 Rick Riordan/actual publishers, but you'll find it very good. at first, it might sound weird as maybe the spells 或者 the characters names don't sound as 你 thought they would, 或者 maybe their voices don't.
this recording was originally made 由 rye-n and the original version is available on www.rye-n.com
this one was re-uploaded on youtobe 由 RJODYSSEY. there are many parts of it. each part hold more-or-less half a chapter.
to find: type 'red pyramid' in the 搜索 box and click on the one that says 'the Red Pyramid audiobook part 01)